linux-kernel - Re: [PATCH 3/3] clk: samsung: exynos5433: add CPU clocks configuration data and instantiate CPU clocks

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Date:	Sat, 18 Jun 2016 23:57:30 +0900
From:	Tomasz Figa <tomasz.figa@...il.com>
To:	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Cc:	Sylwester Nawrocki <s.nawrocki@...sung.com>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...eaurora.org>,
	Kukjin Kim <kgene@...nel.org>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	"linux-samsung-soc@...r.kernel.org" 
	<linux-samsung-soc@...r.kernel.org>, linux-clk@...r.kernel.org,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/3] clk: samsung: exynos5433: add CPU clocks
 configuration data and instantiate CPU clocks

Hi Bart,

2016-05-24 22:19 GMT+09:00 Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>:
> Add the CPU clocks configuration data and instantiate the CPU clocks
> type for Exynos5433.
>
> Cc: Kukjin Kim <kgene@...nel.org>
> CC: Krzysztof Kozlowski <k.kozlowski@...sung.com>
> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
> ---
>  drivers/clk/samsung/clk-exynos5433.c | 72 ++++++++++++++++++++++++++++++++----
>  1 file changed, 64 insertions(+), 8 deletions(-)

Please see my comments inline.

> diff --git a/drivers/clk/samsung/clk-exynos5433.c b/drivers/clk/samsung/clk-exynos5433.c
> index 6dd81ed..9ff6160 100644
> --- a/drivers/clk/samsung/clk-exynos5433.c
> +++ b/drivers/clk/samsung/clk-exynos5433.c
[snip]
>  static void __init exynos5433_cmu_apollo_init(struct device_node *np)
> @@ -3620,6 +3640,12 @@ static void __init exynos5433_cmu_apollo_init(struct device_node *np)
>                                  ARRAY_SIZE(apollo_div_clks));
>         samsung_clk_register_gate(ctx, apollo_gate_clks,
>                                   ARRAY_SIZE(apollo_gate_clks));
> +
> +       exynos_register_cpu_clock(ctx, CLK_SCLK_APOLLO, "apolloclk",
> +               mout_apollo_p[0], mout_apollo_p[1], 0x200,
> +               exynos5433_apolloclk_d, ARRAY_SIZE(exynos5433_apolloclk_d),
> +               CLK_CPU_HAS_E5433_REGS_LAYOUT);

Hmm, I guess the reason for patch 1/3 was that
exynos_register_cpu_clock() has to be called with the ctx pointer.
However samsung_cmu_register_one() returns the ctx pointer, so I guess
you could use that to avoid open-coding?

Best regards,
Tomasz